916172481 has 32 divisors (see below), whose sum is σ = 1464795136. Its totient is φ = 498312000.

The previous prime is 916172479. The next prime is 916172489. The reversal of 916172481 is 184271619.

It is not a de Polignac number, because 916172481 - 2¹ = 916172479 is a prime.

It is a super-3 number, since 3×916172481³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (916172489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28176 + ... + 51246.

It is an arithmetic number, because the mean of its divisors is an integer number (45774848).

Almost surely, 2^916172481 is an apocalyptic number.

It is an amenable number.

916172481 is a deficient number, since it is larger than the sum of its proper divisors (548622655).

916172481 is a wasteful number, since it uses less digits than its factorization.

916172481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23173.

The product of its digits is 24192, while the sum is 39.

The square root of 916172481 is about 30268.3412330441. The cubic root of 916172481 is about 971.2381825176.

The spelling of 916172481 in words is "nine hundred sixteen million, one hundred seventy-two thousand, four hundred eighty-one".